Exodus 7:13

But Pharaoh's heart was made hard, and he did not give ear to them, as the Lord had said.

Exodus 4:21

And the Lord said to Moses, When you go back to Egypt, see that you do before Pharaoh all the wonders which I have given you power to do: but I will make his heart hard and he will not let the people go.

Exodus 8:15

But when Pharaoh saw that there was peace for a time, he made his heart hard and did not give ear to them, as the Lord had said.

Exodus 10:1

And the Lord said to Moses, Go in to Pharaoh: for I have made his heart and the hearts of his servants hard, so that I may let my signs be seen among them:

Exodus 10:20

But the Lord made Pharaoh's heart hard, and he did not let the children of Israel go.

Exodus 10:27

But the Lord made Pharaoh's heart hard, and he would not let them go.

Exodus 7:3-4

And I will make Pharaoh's heart hard, and my signs and wonders will be increased in the land of Egypt.

Exodus 14:17

And I will make the heart of the Egyptians hard, and they will go in after them: and I will be honoured over Pharaoh and over his army, his war-carriages, and his horsemen.

Deuteronomy 2:30

But Sihon, king of Heshbon, would not let us go through; for the Lord your God made his spirit hard and his heart strong, so that he might give him up into your hands as at this day.

Zechariah 7:11-12

But they would not give attention, turning their backs and stopping their ears from hearing;

Romans 1:28

And because they had not the mind to keep God in their knowledge, God gave them up to an evil mind, to do those things which are not right;

Romans 2:5

But by your hard and unchanged heart you are storing up wrath for yourself in the day of the revelation of God's judging in righteousness;

Hebrews 3:7-8

And so, as the Holy Spirit says, Today if you let his voice come to your ears,

Hebrews 3:13

But give comfort to one another every day as long as it is still Today; so that no one among you may be made hard by the deceit of sin:

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Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain